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In many modern buildings, the purpose of heating, ventilating, and air conditioning (HVAC) equipment is to maintain a safe and comfortable environment for building occupants.
在建筑物中，暖通空调(HVAC)设备的目的是给业主提供安全舒适的环境。
Members of the family in modern society are to pursue the diversification of family information and intelligence to bring safe, comfortable and convenient living environment as an ideal target.
现代社会的家庭成员正在以追求家庭智能化带来的多元化信息和安全、舒适与便利的生活环境作为一个理想的目标。
The modern society requires the highway to offer the fast, neat, comfortable, fine and safe traffic environment, this requires highway department to implement high-quality maintenance and management.
现代社会要求公路提供快速、整洁、舒适、优良和安全的交通环境，这就要求公路部门实行高质量的养护和管理。
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